Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantos distritos Donald D. Clancy representa?
 ###Tabelas: CREATE TABLE goalscoring (goalscoring_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Name VARCHAR, Years VARCHAR, Goals INT, Apps INT) CREATE TABLE current_codes (current_codes_id AUTO_INCREMENT PRIMARY KEY, Code VARCHAR, Subdivision name ( be ) (BGN/PCGN) VARCHAR, Subdivision name ( be ) (GOST) VARCHAR, Subdivision name ( ru ) (BGN/PCGN) VARCHAR, Subdivision name ( ru ) (GOST) VARCHAR, Subdivision category VARCHAR) CREATE TABLE children's_books (children's_books_id AUTO_INCREMENT PRIMARY KEY, Güzelçamlı’nin Kayıp Panteri VARCHAR, Güzelçamlı’s Lost Panther VARCHAR, Collection of Short Stories VARCHAR, Can Yayınları VARCHAR, 2005 INT) CREATE TABLE 1980–1989 (1980–1989_id AUTO_INCREMENT PRIMARY KEY, January VARCHAR, February VARCHAR, March VARCHAR, April VARCHAR, June VARCHAR, July VARCHAR, August VARCHAR, September VARCHAR, October VARCHAR, November VARCHAR, December VARCHAR) CREATE TABLE  (_id AUTO_INCREMENT PRIMARY KEY, District VARCHAR, Incumbent VARCHAR, Party VARCHAR, First elected INT, Result VARCHAR, Candidates VARCHAR)  
SELECT COUNT District FROM  WHERE Incumbent = Donald D. Clancy